scholarly journals System-theoretical modeling of terahertz time-domain spectroscopy with ultra-high repetition rate mode-locked lasers

2020 ◽  
Vol 28 (11) ◽  
pp. 16935 ◽  
Author(s):  
Kevin Kolpatzeck ◽  
Xuan Liu ◽  
Kai-Henning Tybussek ◽  
Lars Häring ◽  
Marlene Zander ◽  
...  
Keyword(s):  
Time Domain ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
Theoretical Modeling ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
High Repetition ◽  
Mode Locked Lasers

scholarly journals Ultra-High Repetition Rate Terahertz Time-Domain Spectroscopy for Micrometer Layer Thickness Measurement

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5389
Author(s):  
Kevin Kolpatzeck ◽  
Xuan Liu ◽  
Lars Häring ◽  
Jan C. Balzer ◽  
Andreas Czylwik
Keyword(s):  
Time Domain ◽  
Repetition Rate ◽  
Dynamic Range ◽  
Reference Signal ◽  
Thickness Measurement ◽  
Optical Signal ◽  
High Repetition Rate ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
High Repetition

Terahertz time-domain spectroscopy systems driven by monolithic mode-locked laser diodes (MLLDs) exhibit bandwidths exceeding 1 THz and a peak dynamic range that can compete with other state-of-the-art systems. Their main difference compared to fiber-laser-driven systems is their ultra-high repetition rate of typically dozens of GHz. This makes them interesting for applications where the length of the terahertz path may not be precisely known and it enables the use of a very short and potentially fast optical delay unit. However, the phase accuracy of the system is limited by the accuracy with which the delay axes of subsequent measurements are synchronized. In this work, we utilize an all-fiber approach that uses the optical signal from the MLLD in a Mach–Zehnder interferometer to generate a reference signal that we use to synchronize the detected terahertz signals. We demonstrate transmission-mode thickness measurements of stacked layers of 17μm thick low-density polyethylene (LDPE) films.

Characterization of ultra-high repetition rate mode-locked lasers with an integrated all-optical RF spectrum analyzer

CLEO: 2014 ◽  
2014 ◽  
Author(s):  
Marcello Ferrera ◽  
Christian Reimer ◽  
Alessia Pasquazi ◽  
Marco Peccianti ◽  
Matteo Clerici ◽  
...  
Keyword(s):  
Repetition Rate ◽  
High Repetition Rate ◽  
Spectrum Analyzer ◽  
High Repetition ◽  
All Optical ◽  
Rf Spectrum ◽  
Mode Locked Lasers

Ultra-high repetition rate InAs/InP quantum dot mode-locked lasers

2011 ◽  
Vol 284 (9) ◽  
pp. 2323-2326 ◽  
Author(s):  
Z.G. Lu ◽  
J.R. Liu ◽  
P.J. Poole ◽  
Z.J. Jiao ◽  
P.J. Barrios ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
High Repetition ◽  
Mode Locked Lasers

scholarly journals A New Beamline for Advanced Photoelectron Spectroscopy Based on Extreme Ultraviolet High Harmonics at High Repetition Rate

Proceedings ◽  
2019 ◽  
Vol 26 (1) ◽  
pp. 12
Author(s):  
Cucini ◽  
Pincelli ◽  
Panaccione ◽  
Kopic ◽  
Frassetto ◽  
...  
Keyword(s):  
Time Domain ◽  
Photoelectron Spectroscopy ◽  
Repetition Rate ◽  
Extreme Ultraviolet ◽  
Experimental Tests ◽  
High Repetition Rate ◽  
High Repetition ◽  
High Harmonics ◽  
Properties Of Materials ◽  
Fundamental Insight

Spectroscopy in the femtosecond time domain can both reveal fundamental insight in the properties of materials and provide relevant experimental tests for functional systems. [...]

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